What must be done to an EWARP soft patch before it cures?

The correct action to take regarding an EWARP (Emergency Water Activated Repair Patch) soft patch before it cures is to smooth it out. This is essential because a smooth application ensures better adhesion to the surface being repaired. When a patch is properly smoothed, it can conform more effectively to the contours of the damaged area, maximizing the seal and ensuring that the repair is strong and reliable once cured.

Other options, while relevant to the use or application of repair materials, do not directly pertain to the proper preparation of an EWARP patch prior to curing. For instance, heating may be used to manipulate certain materials but is not a standard practice for EWARP patches. Coating the patch with paint is also unnecessary, as the primary function of the patch is to seal the leak and would not benefit from paint at this stage. Submerging it in water is counterproductive, as EWARP is water-activated, meaning it needs to remain dry until application. Smoothing out the patch is a critical step to ensure effective repair and is the fundamental action required before allowing it to cure properly.